Thomas v



(No Model.)

T. V. ALLIS.

BARBED METALLIC FENCING.

No. 466,748. Patented Jan. 5, 1892.

Fig.1-

J f a c ['2] if a- [Z a k y 6 a A A "A A 50 i it L INVENTIIIR WRTNESSES.

B M @w l V [gist/422 0172519 UNITED STATES PATENT ()FFICE THOMAS V.ALLIS, OF NEIV YORK, N. Y.

BARBED METALLIC FENCING.

SPECIFICATION forming part of Letters Patent No. 466,748, dated January5, 1892.

Application filed June 10, 1889. Renewed April 24, 1891. $eria1 No.390,245. (No model.)

To all whom it may concern-.-

Be it known that I, THOMAS V. ALLIS, a citizen of the United States, anda resident of New York city, in the county and State of New York, haveinvented new and useful Improvements in Barbed MetallicFencing, of whichthe following is a specification.

My invention relates to barbed metallic fencing consisting of a plainflat strip having laterally-projecting barbs produced at intervals alongone edge by cuttinginto and along the strip on said edge, so as toseparate narrow spurs a short distance along the strip and bending themlaterally, some in one direction and some in the other.

My invention consists of an improvement in the form in which the barbsare produced, and are laterally projected, said barbs being longer thanis required for the lateral projection, that they may have a flexible oryielding portion between the projecting part and the connection at thebase with the strip, all

as hereinafter fully described, reference being made to the accompanyingdrawings, in whicht Figure 1 is a side view of the strip, showing themanner in which it is out preparatory to the bending of the barbs. Fig.2 is an edge view of the same after the barbs have been cut and bent.Fig. 3 is a side view of the barbed and twisted strip in the completeform. I take a plain fiat strip a, of the usual size and form for suchfencing, and make longitudinal slits I) through it at intervals in aline nearer one edge than the other, according to the required width ofthe barbs c that I wish to produce, said slits being thelength of twobarbs, including their supporting-arms, and being apart from eachotheralittle more than the required length of two base-webs cl, by whichthe barbs remain joined to the rest of the strip. At the middle of thelength of these slits I sever the narrower portion of the stripdiagonally by cuts 6, to enable the severed parts to be bent laterallyfor the barbs and to point the same. At the middle of the base-webs d Imake the notches f in the outer edge of the strip, and at the bottom ofthe notches the short longitudinal slits g in line with the longer slitsZ2. These notches and slits provide for the twist taking effect betweenthe base connections of the barbs, so

that the strip twists more unitorm than it would without them, and thenotches add materially to the symmetrical appearance of the fencing,besides allowing of the removal of surplus metal not needed or servingany useful purpose in those parts of the strip. The short slits resultfrom a construction of the notch-forming dies, the purpose of which isto avoid in said dies the sharp irregular form of the notches. Betweenthe notches fl make the long shallow concave depressions in the edge ofthe strip shown in the upper side of Fig. 1, the purpose of which is totaper the barbs slightly from base to point and remove the unnecessaryexcess of metal that they would contain if made as wide throughout theirlength as it is necessary to have them for the requisite strength ofconnection at the base with the strip. It also serves to make the barbsless clumsy and more symmetrical in appearance. These depressions andthe notchesj are in practice out together by the same dies, the shapeand length of which are such as to cut from one to the other of theouter extremities of two adjacent slitsg at one operation, so that itwill be seen that the notches f, being made together with the taperingof the barbs, are produced without extra cost. The slitsb are madeconsiderably longer than the barbs are required to project from thestrip, for the purpose of the barbs being supported by an arm of elasticnature, that will yield and be less damaging to animals runningviolently or otherwise pressing hard against them, as I have beforeshown in my application for a patent, filed April 11, 1889, Serial No.306,757, in which case the barbs are bent at right angles to the arms,and the arms are parallel with the strip; but my invention now consistsin the construction of these supporting-arms in the laterallycurvedform, projecting from the strip reversely to the projection of thebarbs, as shown at 'n, Fig. 2, so that the barbs are bent from the stripfirst to one side and thence backward and across the strip to the otherside, and the bend is curved so as not to strain the metal so rashly aswhen the barbs are turned by an angular bend from the arms remainingparallel to the strip.

hat I claim, and desire to secure by Letters Patent, is- I 1. Theimproved barbed fencing in which the integral barbs projecting from theedge of a thin flat strip have a supporting-arm between the projectingpart and the base con nection with the strip, that forms the lateralcurve projection on the opposite side of the strip and supports the barbacross the edge of the strip, substantially as described.

2. The improved barbed fencing in which the integral barbs projectingfrom the edge of a thin flat strip are produced in couples from oppositeends of adjoining base-webs, joining them to the strip and separated bya notch between them, substantially as described.

3. The improved barbed fencing in which the integral barbs projectingfrom the edge of a thin flat strip are produced in couples from oppositeends of adjoining base-webs, joining them to the strip and separated bya notch and said strip having short slits at the bottom of the notches,substantially as described.

4. The improved barb-fencin g strip in which the integral barbsprojecting from the edge of a thin flat strip are produced in couplesfrom opposite ends of adjoining base-Webs, joining them to the strip andseparated by a notch between them, and said strip having a slit at thebottom of the notch, and said strip being twisted, substantially asdescribed.

5. The improved barbed fencing in which the integral barbs projectingfrom the edge of a thin flat strip have a flexible portion orsupporting-arm between the projecting part and the base connection withthe strip, said barbs being tapered on the outer edge from the base,substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two Witnesses, this 8th day of June, 1889.

THOMAS V. ALLTS.

W'itnesses:

W. J. MORGAN, W. B. EARLE.

